mitsubishi Repair Tips




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Results 620
MakeModel Ch.SymptomProblem SolutionSolutionBy:
MitsubishiEuro 12
Int blows Q552Dry joints T551
MitsubishiEuro 12
Hum in st/by & no degaussingC960 1000µ 35v in 24v supply
MitsubishiEuro 12
High HT - should be 120vC906 47µ 50v, C909 2µ2 50v & 2 x 3v zener diodes D907 & 908
MitsubishiEuro 12
Freq blows SD1887 sw mode transistorMod kit avail from WVE (Q901 modkit) & change TEA2261
MitsubishiEuro 12
Field collapseIC451 TDA8178S (must use correct one or foldover occurs if TDA8178FS is used - very expensive!) Also check C452 220µ 35v & 122v HT at TP91
MitsubishiEuro 12
Field collapseReplace TDA8178S & check C956 1000µ 35v, C452 220µ 25v & HT - Mitsi mod kit 2 available from Grandata (cheaper)
MitsubishiEuro 12
Field collapseReplace chip - must be same suffix - use Phoenix repair kit from Grandata
MitsubishiEuro 12
Field collapseNo 28v to TDA8178S - R976 0R82 in psu o/c
MitsubishiEuro 12
Excess width, bowed verts & pic shifted sidewaysLow amp H SYNC fback pulse from LOP - D559 1N4148 s/c - check for dry joints LOPTx
MitsubishiEuro 12
Excess widthTEA2031A
MitsubishiEuro 12
Dies at sw on with squealingC956 1000µ 35v, C958 1000µ 16v, C964 1000µ 50v leaky & dry joints & IC551 (e/w chip) & TEA2031A damaged
MitsubishiEuro 12
Dead or Int reverts to st/by - LOPTr Q522 fails periodically - possibly due to high HTC906 47µ 50v drive coupling cap - also check C905 470µ 35v, C909 100µ 25v,C920 100µ 25v, R961 150k, R972, R960, D907 RD3.0 s/c & IC950; Q522 = 2SD1877 (21"), 2SD1878 (25"), 2SD1879 (29")
MitsubishiEuro 12
Dead apart from 3 chirps at sw onLOPTr 2SD1878 s/c also replaced C956 47µ in psu
MitsubishiEuro 12
Dead - off with bangC906 47µ 63v, Q901 2SD1887, R901 4R7 10w, IC901 TEA2261, D907/8 RD3.0FB1, C920 100µ 63v - C975 47µ 63v was the cause
MitsubishiEuro 12
Dead - LOPTr s/c due to High HTCheck R961 150k & C906 47µ 50v & IC950
MitsubishiEuro 12
Dead - Chopper Q901 & lop tr Q552 u/sQ901 serv kit fitted & Q552 2SD1878 also C905 470µ 35v, C906 47µ 50v, C909 2µ2 50v, C920 100µ 25v
MitsubishiEuro 12
Dead - blows Q901C906 47µ 50v
MitsubishiEuro 12
DeadQ552 2SD1878 s/c; R901 4R7 10w o/c
MitsubishiEuro 12
Contrast low with fb linesIC251 pin 7 only 1.2v instead of 2.9v; 12v line low as Q704 leaky
MitsubishiEuro 12
Blue excessive (or Green/Red)D656 leaky on crt base ( or D655, D657)